The Katadyn Pocket is made of sturdy materials and on the first sight it is clear that this product can endure extreme use. The ceramic element is silver impregnated and it works great against bacteria and protozoa and it successfully filters all microorganisms larger than 0.2 microns, thus giving you clean and drinkable water almost anywhere in the world. The product also features a round pump handle that makes it easy for anyone to use.